Wednesday, March 21, 2012

Re: [HamBrewers] need a simple 2m or 144mhz sdr circuit

 

Dear Subham,
 
 Greetings!
 
 We have made SDRs (RX only) for HF ,particularly for 40MTr band! Not for VHF!
 
 Of course you could always use a down converter from VHF to HF and that should be OKay!
 But I foresee two problems: Majority of the Drivers we have used donot support FM (Of course WINRAD does but the Bandwidth it needs is too high) and the second problem is our VHF band is quite wide in HF terms (2MHz) So a simple solution is not looking promising whereas a tuned (meaning stepped LO for the first converter) Down Converter with extra large SoundCard with a big Sampling rate should do the trick! Is it simple? Obviously not! But of course there may be other solutions as I am looking from the point of view of our SDR. All the details of our SDR (including artwork) are available on our Blog; http://hamrmipl.blogspot.com/ and may be you may find a simpler/better solution!  
 
 Thanks and very best regards, dev

--- On Wed, 3/21/12, shubham <shubhamforme@yahoo.com> wrote:

From: shubham <shubhamforme@yahoo.com>
Subject: [HamBrewers] need a simple 2m or 144mhz sdr circuit
To: HamBrewers@yahoogroups.com
Date: Wednesday, March 21, 2012, 3:37 PM

hi
i am trying to construct a sdr for 2m or 144mhz for my shack ,
can any one give me any details about a simple circuit for 2m sdr??
kindly help
thanks..
shubham



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